Combination and key controlled latching mechanism for locks



Nov. 20, 1934. J. w. CARLSON 1,931,163

COMBINATION AND KEY CONTROLLED LATCHING MECHANISM FOR LOCKS Filed June 16, 1931 Patented Nov. 20, 1934 COMBINATION AND KEY CONTROLLED LATCHING MECHANISM FOR LOCKS John I. W. Carlson, Scottdale, Pa.

Application June 16, 1931, Serial No. 544,846

4 Claims.

This invention relates to looks and has for its object the production of a simple and eflicient lock so constructed as to lock the latching bolt of a lock against movement, the latching bolt being adapted to be unlocked by either a combination or key locking mechanism.

Another object of this invention is the production of a simple and efficient means for lifting the locking bar bodily out of engagement with the latching bolt of a lock through the manipulation of a key controlled lock so as to permit the free operation of the latching bolt without the operation of the key controlled locking mechanism.

Another object of this invention is the production of a simple and efficient combination C011.- trolled lock which is adapted to engage the looking member to permit the opening and closing of the latching bolt when the proper combination has been set.

A further object of this invention is the production of a simple and efficient lock for facilitating the operation of the latching bolt comprising a minimum number of parts and which may be manufactured at a minimum cost.

With these and other objects in view this invention consists in the novel constructions, combinations and arrangements of parts as will be hereinafter fully described and claimed.

In the drawing,

Figure 1 is a front elevation of the lock;

Figure 2 is a front elevation of the interior mechanism of the lock, certain parts thereof being shown in section;

Figure 3 is a section taken on line 3-3 of Figure 2;

Figure 4 is a vertical sectional view through the lock casing showing the combination and tumbler discs in edge elevation, certain other parts being shown in vertical section.

Figure 5 is a section taken on line 55 of Figure 4, the casing being eliminated; and

Figure 6 is a section taken on line 6-6 of Figure 5.

By referring to the drawing it will be seen that 1 designates a casing which is provided with a face plate 2 secured thereto in any suitable or desired manner, such for instance asby means of screws 3. Within the casing 1 is slidably mounted the latching bolt 4 which is provided with an enlarged collar or abutment portion 5 to limit the outward sliding movement of the latching bolt 4 with respect to the casing 1. The inner end of the latching bolt 4 is slidably mounted within a hollow pocket 6 within which is mounted a coil spring '7 engaging the inner end of the latching notch 9 upon the lower edge of the latching bolt 4, this notch 9 being adapted to receive the vertically extending rollback 10 of the door knob structure 11.

This door knob structure 11 may be of the conventional type and is adapted to move the latching bolt 4 in and out upon the turn of the knob structure in the usual manner, when the latching bolt 4 is released, or when the control mechanism thereof is set in su ch a position as to'permit the proper operation of the latching bolt 4.

A locking bar or finger 12 is mounted upon an eccentric barrel 13 eccentrically which is carried by the supporting shaft it as shown clearly in Figure 4 of the drawing. This locking bar or finger 12 is curved outwardly from its connection with the eccentric barrel 13 as indicated at 15 and is provided with a depending end having a latch bolt engaging terminal 16 which is adapted to fit in the notch 1'7 formed upon the topof the latching bolt 4 by the spaced upwardly extended lugs or cars 18. A fiat spring 19 is secure d at 20 to the casing 1 and engages the flat surface 21 of the upper end of the locking finger or bar 12 as shown in Figure 2, to resist movement of the finger under ordinary conditions and normally hold the finger in a set or proper position.

The supporting shaft 14 is provided with a suitable knob 22 preferably spaced from the inside face of the casing 1 and adapted to project from the inside of the door or other means to be locked, so as to permit the operator to actuate the eccentric barrel 13 by turning the knob 22 without the necessity of employing the key. A

barrel or cylinder lock 23 is carried by the opposite end of the shaft 14 and is adapted to actuate or rotate the shaft 14 through the medium of the key 24 in the usual manner.

The barrel or cylinder lock 23 is of the conventional type and it is not desired to limit this particular invention to any particular form of barrel or cylinder look. It should be understood that by turning the shaft 14, the eccentric may be moved to the position shown in dotted lines in Figure 2, thereby lifting the locking finger or bar 22 vertically out of the In order to permit the device to b e actuated by means of the combination mechanism in place of the structure above identified, the tumbler supporting shaft 25 is rotatably mounted within the casing 1 and is provided with an outer knob 27. The outer knob 2'7 carries a dial 28 of suitable structure for the purpose of permitting the proper operation of the combination, suitable indicia or numbers 29 being placed upon the outer face plate 2 and a cooperating pointer upon the dial for. the purpose of permitting the proper operation of the dial.

The tumbler disc supporting shaft 25 is provided with a plurality of longitudinally extending notches 29 for permitting the lugs 30 to fit therein and lock the tumbler discs 31 in a set position with respect to the tumbler disc supporting shaft 25. Any number of discs may be employed to suit the desired combination, and these discs are provided with suitable notches 32 which are disposed opposite each other and are adapted to be brought into registration with the notches 33 of the intermediate loosely mounted discs 34, which discs 34 are provided with suitable lugs 35 upon their peripheries, adapted to be engaged by the ing 36 of the locking bar to cause the rotatable discs 34 to stop at a proper position to align their notches 33 with the notches 32 of the locked discs when the shaft 25 is alternately turned first in one direction and then in an opposite direction. In other words, as shown in this particular form, I employ a plurality of discs which are keyed to the shaft 25 and intermediate these keyed discs I place rotating discs which are not keyed to the shaft 25 and which discs 34 are adapted to be rotated with respect to the shaft 25 for the purpose of bringing the notches 33 into alignment with the notches 32. The inwardly extending lug 36 carried by the finger 12 normally lies in a position to enter the notches 32 and 33 of the respective discs 31 and 34 when the proper combination has been worked, thereby permitting the latching bolt 4 to be reciprocated within the easing. The locking finger or bar 12 may swing about the eccentric 13 as a pivot during movement of the bolt. The shaft 14 will constitute a support for the eccentric 13.

It should be understood that the cylinder or barrel lock 23 may be of the adjustable type to permit the same to be varied according to the thickness of the door or support upon which the lock. is to be placed. The eccentric barrel 13 which is carried by the shaft 14 is provided with a socket 37 in which a projecting pin 38 of the barrel or cylinder lock 23 extends. This socket 37 is provided with an enlargedpocket 39 near one end having radial lugs 40 projecting inwardly from its walls which are adapted to contact with lugs 41 carried bythe-pin 38 of the barrel or cylinder lock 23. It will therefore be seen that by turning the'knob 22, the eccentric. 13 may be rotated in one direction for the purpose of raising the locking finger 12 independently of the operation of the key controlled lock 23. This knob 22 is of course to be placed only upon the inside of the door or look casing. The key controlled lock 23 is to be placed upon the outside and is to be actuated by the key 24 which will'rotate the pin 38 and by bringing the lugs 41 into contact with the lugs 40 the eccentric 13 may be turned for the purpose of raising or lowering the locking finger or arm 12. 3

Of course, it should be understood that certain detail changes in the mechanical construction maybe employed without departing fromthe spirit of the invention so long as these changes fall Within the scope of the appended claims.

Having described the invention what is claimed as new is: e 1. A look of the class described comprising a casing, a reversible latching bolt provided with a plurality of spaced ears upon opposite sides thereof, a knob mechanism provided with a projecting rollback adapted to engage between the ears upon one side of said latching bolt, a pivotally mounted locking finger adapted to engage between the ears on the opposite side of said latching bolt, said locking finger having a projecting lug, said ears on said latching bolt being arranged in transverse alignment to permit of the reversal of said latching bolt, and movable controlling the latching bolt, said projecting rollback being adapted to engage one of said notches, a pivotally mounted locking finger adapted to engage thenotch on the opposite side of the latching bolt, said locking finger having a projecting lug, and movable controlling means having means for receiving said projecting lug, said last mentioned means being adapted to be brought into alignment with said lug for receiving the lug and permitting the swinging of said locking finger and the consequent operation of said latching bolt.

3. A look comprising a casing, a latching bolt slidable therein, a tumbler supporting shaft carried by said casing, a series of fixed and loose discs carried by said shaft, the fixed and loose discs being arranged alternately whereby the loose discs are placed in between the fixed discs, each of said discs having notches leading from their edges and adapted to be brought into registration with each other, a locking finger having a projecting lug, said loose discs having means for contacting with said projecting lug for facilitating the alignment of the notches in said discs as said shaft is selectively rotated, said lug being adapted to fit within said notches when all of the notches are brought into alignment with the selective rotation of said shaft, said finger engaging said latching bolt, and means other than said finger for imparting movement to said latching bolt.

4. A look of the class described comprising a casing, a knob mechanism provided with a projecting rollback, a reversible latching bolt having rollback engaging means formed upon opposite sides thereof in transverse alignment to permit the reversal of the latching bolt, a pivotally mounted locking finger adapted to engage the JOHN I. w. CARLSON. 

